Massacre Rocks State Park
- Status
- Open (per official listing)Daily 7 a.m. – 10 p.m.
- Entrance fee
- Statewide rule — see below
- Day-use reservations
- None mentioned
- Dogs
- Statewide rule — see below6-ft leash
- Camping
- Yes
- Official site
- parksandrecreation.idaho.gov(208) 548-2672
Official page last checked Oct 29, 2026. How we keep this current
Current alerts 1
Alert Park updateCheck out this video! https://www.facebook.com/share/p/16BSQDbaJn/
Posted by the park. Official alert
Overview
In Power County, about 10 miles southwest of American Falls, Massacre Rocks State Park covers about 862 acres.
The park supports rock climbing, golf, disc golf, historic sites, and canoeing and kayaking. Overnight options include campsites, with tent sites and showers.
Hours
Park, gate, office and facility hours are listed separately because they often differ. Alerts above override normal hours.
| Facility | Days | Hours | Season |
|---|---|---|---|
| Day use | Daily | 7 a.m. – 10 p.m. | — |
Official wording
Day-use locations within state parks are open from 7 am to 10 pm, per Idaho state code 26.01.20 (5). Day-use hours may change based on park manager discretion.
Source: official park page, checked Oct 29, 2026. Times are local to the park (America/Boise).
Fees and passes
Per vehicle: Motor Vehicle Entrance Fee $7/day ($14/day for non-residents at premium parks), waived by the Idaho State Parks Passport or MVEF annual sticker.
Statewide fee rule from Idaho's park system; this park’s page doesn’t list its own fees.
Idaho park passes
- Idaho State Parks Passport — $10 per vehicle per year (Idaho residents, bought with vehicle registration). Waives the motor vehicle entrance fee at Idaho state parks; camping and other fees still apply; not valid for Park N' Ski Details
- Motor Vehicle Entry Fee (MVEF) Annual sticker — $80. Waives the daily motor vehicle entrance fee (aimed at out-of-state guests) Details
From the Idaho state guide. Confirm which passes this park accepts.
Reservations
- Day use
- No day-use reservation requirement mentioned
- Booking system
- IDPR reservation system (getoutside.idaho.gov)
- Phone
- 1-888-922-6743
We link to the official booking system rather than showing live availability, which changes minute to minute.
Pets
See the park’s wording · leash up to 6 feet
Pets: Yes on a 6-foot leash
Service animals are generally permitted where pets are not. Check with the park for specific areas.
Camping
Overnight: 42 serviced (1 ADA); 4 cabins
General accommodations: Cabins, RV Campsites, Tent Campsites
From the official park page, checked Oct 29, 2026. Site counts and prices can change; confirm when booking.
Things to do
BikingWildlife viewing and birdingBoatingCampingRock climbingGolfDisc golfHikingFishingHistoric sites and toursRanger and interpretive programsCanoeing and kayakingPicnicking
Trails
Trail Types: • Hike
- Bike
Boating and paddling
Boating: Ramps and docks for day-use
Amenities
Facilities
- Restrooms
- Flush toilets
- Vault or pit toilets
- Showers
- Picnic areas
Camping
- RV dump station
- Tent camping
Recreation
- Golf course
- Disc golf
✓ listed by the park · ✕ the park says it is not available. Anything not shown here isn’t mentioned by the official source — that means unknown, not unavailable.
Accessibility
ADA Accessibility Features: • ADA Cabin
- ADA Campsite
- ADA Restroom
Conditions change. Contact the park to confirm specific accessible features before your visit.
Getting there
- Address
- 3592 N. Park Ln
American Falls, ID 83211 - Nearest town
- American Falls — about 10 mi southwest (straight line)
- Coordinates
- 42.6808, -112.9836
- Phone
- (208) 548-2672
- mas@idpr.idaho.gov
Google Maps directionsApple MapsOfficial park map (PDF)
Directions from the park
Location: 10 miles W of American Falls, ID | 36 miles W of Pocatello, ID | 3 miles W of Idaho Falls, ID | 201 miles E of Boise, ID | 198 miles N of Salt Lake City, UT
Nearby state parks
Sources and freshness
- Idaho State Parks — park page — last checked Oct 29, 2026; page says updated Mar 16, 2026
- WordPress REST API, custom post type state-park (backs the Find a Park page)
- Wikidata
- USGS PAD-US 4.1 (boundary and acreage)
“Last checked” is when our system last read the official source. No change has been detected since this page was first published. Hours, fees and rules can change without notice — confirm with the park before you go. Methodology